History explorer card - manual installation

Hi there.
Recently the “history-explorer-card” was put in archive of HACS and accidentally I deleted it. So I decided to install it back manually. I followed all steps in GitHub description of the “history-explorer-card” but still I do not see this card in the list to be added. Please, help

Did you copy the history-explorer-card.js into your www/ folder? Did you reference it properly in your lovelace resources section correctly? Did you restart HA or at least force reload your dashboard?

Someone else forked it.
See here: https://github.com/SpangleLabs/history-explorer-card

I’m not seeing this in the default HACS repository as the Github mentions. Is there something I’m missing? Do I need to load a repository or something?

Correct. Go into HACS and go to the "Custom repositories menu item in the attached screenshot

After selecting that, paste in the URL into the resulting window and click the Add button.

Where do I find the URL to paste? Is it the one from the github page?

Yes. It’s the one in my comment above.
https://github.com/SpangleLabs/history-explorer-card